Oxadiazon and butralin emulsion in water and preparation method thereof

Abstract

The invention provides an oxadiazon and butralin emulsion in water and a preparation method thereof. The total mass of the components of the emulsion in water is 100%. The emulsion in water comprisesthe following components in percentage by mass: 25.5-38% of oxadiazon and butralin which serve as effective components, 4-8% of xylene, 15-30% of 150 # solvent oil, 5-13% of a nonionic surfactant, 4-8% of an anti-freezing agent and the balance of water, wherein the mass ratio of oxadiazon to butralin is 1: (1-4). The emulsion in water expands the weed control spectrum, has a good control effect ongramineous weeds such as barnyard grass and crab grass and broadleaf weeds such as Litsea cubeba, can achieve a better control effect than 48% butralin emulsifiable concentrate of a single agent under the condition that the dosage of the emulsion in water is less than that of 48% butralin emulsifiable concentrate of the single agent, is safe to rice, has no side effect and is safer to the environment.

Description

technical field [0001] The invention belongs to the technical field of herbicides, and in particular relates to a water emulsion of oxadiazone and sec-butyrin and a preparation method thereof. Background technique [0002] Oxadiazon is an oxadiazolone herbicide, also known as oxadiazole, Nongsita, and its chemical name is 5-tert-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)- 1,3,4-Oxadiazolin-2-one works mainly through the absorption of weed sprouts and stems and leaves, and can exert good herbicidal activity under the condition of light. It is especially sensitive to weeds in the germination stage. As soon as the weeds germinate, the growth of the bud sheaths is inhibited, and their tissues rot rapidly, and the weeds die. Oxadiazone is mainly used for the control of barnyardgrass, daughter, paspalum, sedge, bermudagrass, knotweed, echinacea, melon skin grass, etc. in rice fields. It can also be used to control cotton, soybeans, sunflowers, peanuts, Potatoes, sugarcane, celery...

AI Technical Summary

Problems solved by technology

However, the herbicidal composition acts on peanut fields, and its effect on paddy fields and weeds in paddy fields is not yet clear.

In addition, the disclosed dosage forms all have different problems. Wettable powders are easy to cause product sticking, are not easy to disperse and suspend in water, or are easy to block the nozzle, causing precipitation in the sprayer, etc., resulting in uneven spraying and easy to make crops Partial phytotoxicity; water-suspension concentrate is a suspension of insoluble solid pesticides and additives that are insoluble in water and dispersed in water medium, which is prone to formation damage such as layered agglomeration and crystallization

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